Graflex made a spring kit, I bought one and paid an dear price. Before I bought one, I made my own out of old hack saw blades a very tedious process, but effective. What I am not sure of if the 2x3 and 4x5 take the same kit. Biggest problems with the spring kit is the time it takes to convert back to GG. Be sure your infinity setting is correct, and your rangefindr is tracking before you go to rollfilm. Russ

spring kit, 2 sizes...4x5 and 2x3
4x5 Speed/Crown.....2x3 Speed/Crown,
and it worked on the SLR's also
Made to replace the spring back
(Graphic Back).....I have the brochure photos if it would clear things up!
And I have a sketch of the 2x3 spring
if anyone wants to make their own!
bsaunders1@bak.rr.com
Bert